Economic entomology for the farmer Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges . economicentomolo00insmit Year: 1896 AN ECONOMIC ENTOMOLOGY. and this may be done more or less completely by mechanical means. As against the larger speciesâ, against all except Agrilusâa wire mosquito netting loosely encircling the trunk, so as not to touch it anywhere, is a complete protection. The in- sects lay their eggs under a bark scale, or on smooth bark gnaw a little hole in which the &^^ is laid, and if access to th
Economic entomology for the farmer Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges . economicentomolo00insmit Year: 1896 AN ECONOMIC ENTOMOLOGY. and this may be done more or less completely by mechanical means. As against the larger speciesâ, against all except Agrilusâa wire mosquito netting loosely encircling the trunk, so as not to touch it anywhere, is a complete protection. The in- sects lay their eggs under a bark scale, or on smooth bark gnaw a little hole in which the &^^ is laid, and if access to the bark be prevented they seek other localities. â The wire must be tied at Fig. 173. The sinuate pear-borer, Agrilus siniiatus.âa, beetle ; b, larva ; c, its anal fork ; d, pupal chamber with pupa in position. the top to prevent beetles getting under it, and must extend underground an inch or so. In this way we not only prevent new infestation, but any beetles that may emerge from the trunk will be hopelessly imprisoned and will die without a chance to reproduce. Instead of wire netting, tarred paper or even newspapers tightly wrapped around the trunk to the branches will answer an excellent purpose, needing renewal each year, however, where the wire netting lasts several seasons. Thorough whitewashing
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